00:01
If we see our respiratory system, it basically involves in inhalation of oxygen rich air, inhalation of o2 rich air and also concerned with exhalation of co2 rich air.
00:23
Exhalation of co2 rich air.
00:28
But for this process, it also has to do extra work.
00:32
That is, when we inhale the air, that is, inhaled hair contains a lot of impurities.
00:41
For example, it contains dust, it contains bacteria, pathogens, viruses, etc.
00:50
So these dust and pathogens have to be trapped.
00:53
Have to be they have to be trapped before they reach the gaseous exchange chamber before reaching gaseous exchange chamber that is the alveoli so because alveoli is single cell thick layer so if they are able to reach the exchange chamber alveoli that can infect the respiratory system so how can the trap it is using two methods.
01:23
One is use of celia and the other is with the help of the mucus secreted by the celiated cells.
01:31
So mucus traps the traps, dust and allergens, dust, pathogens and allergens and then the celia will help to transport it away from the respiratory tract...